RT Journal Article
T1 Efficient photogeneration of nonacene on nanostructured graphene
A1 Ayani, Cosme
A1 Pisarra, Michele
A1 Urgel, José
A1 Navarro, Juan Jesús
A1 Díaz Blanco, Cristina
A1 Hayashi, Hironobu
A1 Yamada, Hiroko
A1 Calleja, Fabián
A1 Miranda, Rodolfo
A1 Fasel, Román
A1 Martín, Fernando
A1 Vázquez de Parga, Amadeo
AB The on-surface photogeneration of nonacene from a-bisdiketone precursors deposited on nanostructured epitaxial graphene grown on Ru(0001) has been studied by means of low temperature scanning tunneling microscopy and spectroscopy. The presence of an unoccupied surface state, spatially localized in the regions where the precursors are adsorbed, and energetically accessible in the region of the electromagnetic spectrum where n–p* transitions take place, allows for a 100% conversion of the precursors into nonacenes. With the help of state-of-the-art theoretical calculations, we show that such a high yield is due to the effective population of the surface state by the incoming light and the ensuing electron transfer to the unoccupied states of the precursors through an inelastic scattering mechanism. Our findings are the experimental confirmation that surface states can play a prominent role in the surface photochemistry of complex molecular systems, in accordance with early theoretical predictions made on small molecules.
PB Royal society of chemistry
SN 2055-6756
YR 2021
FD 2021
LK https://hdl.handle.net/20.500.14352/91067
UL https://hdl.handle.net/20.500.14352/91067
LA eng
NO Ayani, Cosme G., et al. «Efficient Photogeneration of Nonacene on Nanostructured Graphene». Nanoscale Horizons, vol. 6, n.o 9, 2021, pp. 744-50. https://doi.org/10.1039/D1NH00184A.
NO Ministerio de Ciencia e Innovación (España)
NO Ministerio de Economía y Competitividad (España)
NO Comunidad de Madrid
NO Swiss National Science Foundation
DS Docta Complutense
RD 13 jul 2025